公开(公告)号：US20040036999A1

公开(公告)日：2004-02-26

申请号：US10464435

申请日：2003-06-16

Applicant: STMicroelectronics S.r.I.

Inventor： Francesco Chrappan Soldavini ,  Roberto Oboe ,  Paolo Capretta

IPC: G11B005/596 ,  G11B021/02

CPC classification number: H02P25/034

Abstract: A method of driving an electrical load having a complex electrical impedance, such as a voice-coil motor controlling the position of a read/write head in a data storage disk drive system, comprises providing a voltage-mode driver generating drive signals for the electrical load in response to drive commands. Compensated commands for the voltage-mode driver are generated filtering the drive commands, compensating for a phase shift between electrical quantities delivered to the electrical load. The voltage-mode drive thus emulates a conventional, but more expensive, current-mode drive. In a preferred embodiment, the method comprises estimating characteristic parameters of the electrical load during the operation, and adapting the filtering to the estimated characteristic parameters. The estimation comprises implementing a Kalman filtering algorithm, particularly an extended Kalman filtering.

Abstract translation: 驱动具有复电阻抗的电负载的方法，例如控制数据存储盘驱动系统中读/写头位置的音圈电机，包括提供电压模式驱动器，产生用于电 响应驱动命令加载。 产生用于电压模式驱动器的补偿命令，对驱动命令进行滤波，补偿传送到电负载的电量之间的相移。 因此，电压模式驱动器模拟常规但是更昂贵的电流模式驱动器。 在优选实施例中，该方法包括估计操作期间的电负载的特征参数，以及使滤波适应估计的特征参数。 估计包括实现卡尔曼滤波算法，特别是扩展卡尔曼滤波。